Across the globe, private-label sales and shares are strongest in commodity-driven, high-purchase categories and where consumers perceive little differentiation. On the other hand, categories where innovation and differentiation is important, national brands typically lead in sales.

Did you upgrade to the latest gadget and still have your old electronics laying around? How about the bike you bought to get in shape that’s just gathering dust? What if you could collect cash for these unused items? Many people are already cashing in, as participants around the world are...

It happens thousands of times every day in stores across America. A shopper walks in, grabs a cart and reaches for the store circular to find out what’s on sale. The ongoing consumer love affairwith the store circular continues unabated in the digital age—with an electronic twist. A whole new...